Form block



June 9, 1925.

' L. R. WETHERILL FORM BLOCK Filed Jan. 14, 1924 2 Sheets-Sheet 1 ZL R.BY

L ATTORNEY.

June 9, 1925.

' L. R. WETHERILL FORM BLOCK 2 Sheets-Sheet.

Filed Jan. 14', 1924 1 ATTORNEY.

Fatente d June 9, 1925.

UNITED STATES PATENT, OFFICE.

LEE R. \VETI-IERILL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO STOKESAND SMITH COMPANY, OF PHILADELPHIA, PENNfiYL-VANIA, A. CORPORATION OFPENN- SYLVANIA.

FOBlVI BLOCK.

To all whom it may concern:

Be it known that I, LEE R. l VETHERILL,

a citizen of the United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented certain new anduseful Improvements in Form Blocks, of which the following is aspecification.

My invention relates to form blocks, of the character employed inmachines, for example of the character described in Letters Patent No.691,329, January 14, 1902, for covering previously formed or stayedboxes and their covers by applying thereto a cover blanlnor for forminga box blank into box form and applying a cover blank serving both tohold the, box blank elements in boxforming position and to cover. thebox.

In accordance with my invention, a form block, having a body of wood orany other suitable material, is provided at its corners with shoes ofmetal or other suitably hard wear-resisting material, havingbox-engaging faces whose planes coincide with or are adjustable withrespect to the planes of the side box-engaging faces of the form blankbody, or whose planes coincide with or are adjustable with respect tothe planes of faces of side shoes, of metal or other suitably hardwear-resisting material, carried by the form blank body and preferablyadjustable thereon. V

For an illustration of some of the various forms my invention may take,reference is to be had to the accompanying drawings, in which:

Fig. 1 is a vertical sectional view, partly in elevation, illustratingone of the forms of my form block structure in its environment with theusual co-acting elements of a boxi'm-ming or covering machine.

Fig. is a top plan view of a form block embodying my invention.

Fig. 3 is a sectional view, on larger scale, taken on the line 33 ofFig. 2.

Fig. 4 is a perspective view of the block shown in Fig. 2, one of thecorner blocks being omitted.

Fig. 5 is a perspective view of a corner shoe. 7

Fig. 6 is a vertical sectional view, parts in elevation, in generalsimilar to Fig. 1,

Application filed January 14, 1924. Serial No. 686,240.

but including a modified form of formblock structure.

Fig. 7 is a top plan view of a modified form of form block embodying myinvention.

Fig. 8 is a sectional view, on larger scale,

taken on the line 8-8 of Fig. 7.

'B controlled, as well understood in-the art,

by the rods 1 and 2, 2. The lower block A carries pins 3 passinglooselythrough holes 4. in the block B for holding them in properregister with each other but permitting their relative movement. Theform blocks cooperate with the usual vertically movable platen 5, uponwhich are placed the box and cover blanks suitably manipulated by suchtools or instrumentalities of the box-forming or covering machine, asbrushes, rollers, corner lap fingers, edge turn-in fingers and pressureblocks.

In Fig. 1 the box and cover are indicated at 6, the cycle of operationhaving reached that stage at which the pressure blocks 7 are about toact.

Referring now to Figs. 2 to 5 inclusive, the form block 13 consists of abody having the lateral box-engaging faces 8, at its sides and ends.

The body or block B is preferably of wood or equivalent light and softmaterial, though it may be of metal or other material if suitable ordesirable. It is preferred however, that the block B shall be light inweight to reduce the inertia of the moving parts of the machine wherebyhigh speed operation is more readily attainable. At its center there issecured to the block B by screws 9 the metal plate 10, into which arethreaded at 11 the aforesaid rods 2, 2, for controlling verticalmovement of-the block B independently of or in suitably timed relationwith respect to the lower form block A.

At each of its corners the block B is cut a ay, as indicated at 16, Fig.4, to receiveand accommodate the box-engaging cheeks 17 of the cornershoes 18.. The shoes 18, and particularly their checks or flanges 17,are of metal or other suitably hard weanresisting material, as moldedphenolic condensation product, as: bakelite, or equivalent. The body.portion 18 of: the corner. shoe is preferably in plate form engagingupon the upper surfaceof the block B, and confined thereto by the screwsor bolts 196X- tending upwardly throughtheblock B, and having threadedon their upper ends the nuts 20 between which and the shoe body 18 mayintervene resilient or looking washers-21. I p

Each. shoe 18'. is provided with apertures 22' through which freelyext-end the aforeientionedscrewsor bolts 19 and the fastening screw 23',threading into the body B for-holding the shoe 1 8 in any position towhich adjusted, the adjustability being permitted by'the apertures 22,which, as indicated" in Fig. 5, preferably extend diagonally or atdegrees with respect to the box-engaging"'faces 24 of' the cheeks 17; Bythe adj ustability described, the planes of the box-engaging faces maybe brought into coincidence-with the planes of' the box engaging: faces8 oft-he body or block B, or the faces 21 may be adjusted to positionsslightly short of or beyond the faces 8.

As indicated-in Fig. 1, the blocks A and B may be providectwithregistering or aligned holes 25, 25, to accomn'iodate the strippingrods, not shown, for st-rippmg the box: 6 from the formblock structureupon completion of the cycle of: operations performed by the machine.

As indicated, the shoes 18 may be proride-d with holes 26 in alignmentwith the holes25. The block-B'n'i'ay have the additional stripping rodholes 27', or both sets of holes and 27 may be provided.

The corner shoes 18 co-act with the boxand box wrapper or cover atregions where the adhesive, as glue, bywhich the wrapper or cover isheldto the box, is to some extent pressed outand accordingly accumulatesupon the form block, particularly adjacent its corners. herethe formblock B is of wood or similar material, the repeated scraping of thebox-engagingfaces of the block to remove the accumulations of glue, willwear it away and deform it. The hard or metallic corner shoes however,of the character described, withstand the wear incident to removal ofaccumulations of glue by scraping. The longitudinal.extent of eachof thecheeks or facesl'? or 24. may be made anything suitable or desirable.The minimum length however, should prefer ablybe such. as to extend.throughout the region where the adhesive accumulates and on the otherhand may be so. great. as to cause the cheeks or flanges 17 ofneighboring corner shoes to meet.

In Fig. 6 there isshown substantially the same combination of partsindicated in Fig. 1, except that the fornrblock Bis supplied withadditional box-engaging members 28, carried', as indicated in Figs. 7 toOinclusive, bythe body B, ofwood or other suitable material, betweenthecorner shoes 18.

belts or screws 19, extending upwardly through the-block Bfrom its lowerface and having applied thereto the nuts- 20 and washers 21 ashereinbefore described. Through some of the slots 81 of members 28 may:extend screws 23for: holding the members- 28 in any-position to whichadjusted,

The cheeks or flanges 29 have the boxcn'gaging faces 32, whose planesmay be brought by adjustment to coincide with or to fell slightly shortof'or to extend slightly beyond the planes of the faces 24: of thecornershoes 18i As indicated in Figs. 7, Hand 10; some of'thecorner-shoes 18 may have elongated cheeks or flanges 1'? which,w-itlneorner shoes having cheeks 17 of substantially equal length, andwith side shoes of different lel'igt hs,will-serve in differentcombinations toprovide corner and side shoesfor blocks of differentsizes operating upon boxes of different lengths and widths.

By strl'ict-ure "o'l t'he character indicated in- Figs. 7 to9"inclusive, all oi? the boxengaging faces are the surfaces of membersof metal on other hard"wear-resisting material, and none-of the side orend faces of the body or block B come into contact with the box or itswrapper;

The adjustments of the corner shoes of Figs. 2, 3 and il, and theadjustments'of the corner and side shoes of Figs. 7, 8 and 9, serve inaddition to accommodate the form block structure to inaccuracies orirregularities in the creasing or scoring of the box blanks, for itsometimes occurs that the creasing or scoring is such that a perfectlyrectangular box is not formed, and by adjusti'nent of the shoes of theform block structure, the outline of the form block structure may varysufficiently from strictly rectangular form suitably to operate uponinaccurately scored box blanks and the resultant irregular box forms.

lVhat I claim is:

1. Form block structure comprising a block, and a corner shoe carried bysaid block, said shoe having a body overlying said block, and a cheekhaving a box-engaging face disposed in a plane substantially parallelwith a lateral face of said block.

2. Form block structure comprising a block, and a corner shoe carried bysaid block, said shoe having a body overlying said block, and cheeksdisposed at an angle with each other and having box-engaging facessubstantially parallel with lateral faces of said block.

3. Form block structure comprising a a v respect to said lateral face.

6. Form block structure comprising a.

block, and a corner shoe having abody overlying said block .and having adepending cheek whose face is substantially parallel with a lateral faceof said block, and means for adjusting said shoe diagonally with respectto said lateral face of said block.

7. Form block structure comprising a block, and a corner shoe havingintersecting faces, and means for adjusting said shoe diagonally uponsaid block.

8. Form block structure comprising a block, having its lateral facesrecessed at a corner, and a corner shoe at said corner, having cheeksdisposed in the recessed lateral faces of said block, and means foradjusting said shoe upon said block.

5). Form block structure comprising a block. having its lateral facesrecessed at a corner. and a corner shoe at said corner, having cheeksdisposed in the recessed lateral faces of said block.

10. Form block structure comprising a block member, a corner shoemember, one of said members having a diagonal slot, and

means carried by the other of said members extending through said slotfor securing said members to each other.

ll. Form block structure comprising a block member a shoe member, one ofsaid members having a plurality of slots, means *arricd by the other ofsaid members extending through one of said slots and holding saidinembersfor slidable engagement with each other, and means carried bysaid other of said D'IQIIIlJCl'S engaging in another of said slots forfixedly holding'said menibers to each other in position to whichrelatively adjusted. V g r i 12. Form block structure comprisinga blockmember, a corner shoe member, one of said members having a plurality ofdiagonally extending substantially parallel slots, means carried by theother of said members engaging in one of said slots to permit slidiugadjustment of said members with respect to each other, and means carriedby said other of said men'ibers engaging in another of said slots forfixedly holding said mentbers in position to which relatively adjusted.

13. Form block structure comprising a block having an aperture toaccommodate a stripping rod, and a shoe carried by and ad justable withrespect to said block and; having an aperture registering with saidaperture in said block.

14:. Form block structure comprising a block having at a corner anaperture to ac commodate a stripping rod, and a corner shoe carried byand adjustable upon said block and having an aperture registering withsaid aperture in said block.

15. Form block structure comprising a body of soft material, such aswood or equivalent, and a shoe of hard wear-resisting material, such asmetal or equivalent, carried thereby.

16. Form block structure comprising a body of soft material. such asWood or e piivalent. said body having late al boxengaging faces, and acorner shoe, of metal or equivalent material, adjustable diagonally uponsaid body and having depending cheeks whose faces are substantiallyparallel with said lateral faces of said body.

17. Form block structure comprising a block, and a side shoe of hardwear resisting material carried by said block and tern'iinating shortof, the corners of said block.

18. Form block structure comprising a block, and a side shoe carried bysaid block and terminating short of the corners of said block, and meansfor adjusting said shoe laterally of block.

19. Form block structure comprising a block, and independent corner andside shoes carried by said block.

20. Form block structure comprising a block, and independent corner andside shoes carried by said block, and means for adjusting said cornerand side shoes upon said block.

21. Form block structure comprising a block, and independent corner andside shoes carried by said block, and means for adjusting said cornerblocks diagonally up ltlt) l iiL on suidbioeiqand means foradjustingsaid side shoe in a d'ireetion at right angles to the side of said blockto. which said side shoe is applied.

22. Form block structure comprising a body member of Wood or equivalent-Ina tei'iel, and independent corner and side shoes of metal 01equivalent material can i'iedby said body and having box-engagingfaces.- disposed in substantially the same plane.

23'. Form block structure. comprising a body member, eornei' shoescarried by said body member at adjacent corners thereof. each of; thesaidleorner shoes having depending cheeks hzwing box-engaging faces, thecheeks of one of saideorner shoes havingunequal lengths, and a side shoecarried by said body member between said corner shoes. I

LEE R. WETHEBILL.

